相关实验视频

Updated: Jun 12, 2025

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples
09:42

Fabrication of a Dipole-assisted Solid Phase Extraction Microchip for Trace Metal Analysis in Water Samples

Published on: August 7, 2016

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一个可靠而简单的组合,旋辅助散射磁性固相提取与直接吸附剂采样,用于在水样中使用火焰和金属炉 AAS 的高度灵敏的白银测定

Diego Prudencio Dos Santos1, Milena do Prado Ferreira1, Kristiany Moreira Diniz2

  • 1Department of Chemistry, State University of Londrina, Rodovia Celso Garcia Cid, PR 445, Km 380, Londrina, PR, 86050-482, Brazil.

Bulletin of environmental contamination and toxicology
|September 21, 2024
PubMed
概括

一种新的旋辅助分散磁性固相提取方法在水样中提供了高度敏感的银的确定. 这种技术显著提高了使用火焰或炉原子吸收光谱的检测极限.

关键词:
在 DMSS-FAAS 之间.分散磁性固相提取 (DMSPE) 是一种磁性颗粒是一种磁性粒子.银的预度预度.

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A Practical Guide on Coupling a Scanning Mobility Sizer and Inductively Coupled Plasma Mass Spectrometer SMPS-ICPMS11:18

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For AAS measurements, samples must be introduced as clear solutions, often requiring extensive preliminary treatment to dissolve materials like soils, animal tissues, and minerals. Common methods for sample preparation include treatment with hot mineral acids, wet ashing, combustion in closed containers, high-temperature ashing, or fusion with reagents.
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Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...
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Atomic absorption spectroscopy (AAS) is a technique used to analyze elements by measuring electromagnetic radiation (EMR) absorbed by atoms, which causes them to transition to a higher-energy orbit. The most crucial step in AAS is atomization, where the analyte is converted into gas-phase atoms, typically through a flame or furnace. Some of these atoms become thermally excited in the flame, while most remain in the ground state.
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Accurate analysis of complex samples often requires advanced preparation techniques to achieve reliable and reproducible results. Samples containing inorganic or organic materials can be challenging to dissolve or decompose effectively. Standard sample preparation methods include acid digestion, fusion, dry ashing, and wet digestion.
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